Cap-making machine



2 Sheets-Sheet 1 H. o'sswALD CAP MAKING MACHINE Filed Oct. 21, 1920 Nov. 1**1, 1924` i mw wm Nofv. 11, 1924.'Y

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Patented Nov. l1, 19.24.

UNITED S FFICE. f

HERMAN OSSWALD, F RICHJMIOND HILL, NEW YORK.

CAP-MAKING MACHINE.

Application filed Uetober 21, 1920. Serial No. 418,349.

To al?, whom t may concern:

Be it known that I, HERMAN OsswALD,

a citizen of the United States, and resident of Richmond Hill, in the county of Queens and State of New York, have invented certain new and useful mprovements in Cap- Making Machines, of which the following is a specification.

This invention relates to improvements in cap making` machines and has particular reference to an improved machine for making caps of the type adapted for use on `glass bottles or jars and where it is required that the cap shall be pro-vided with a constricted or narrowed neck portion having an enlarged head or closed end, while the open end of the cap is provided with a bead or flange of greater diameter than the said neck or main portion of the cap.

One object of the invention is to provide a simple, novel and improved machine for making caps of the type described. Another object is to provide novel means for trimming the cap. Other objects will appear as this specification proceeds. Accordingly my invention is embodied in a cap making machine arranged, designed and constructed as hereinafter set forth while reference is had to the accompanying drawings in which-- Fig. 1 is a side, elevation of a'cap making machine embodying my invention with parts omitted and parts broken away,

Fig. 2 is a sectional view of the machine taken on line 2 2 of Figure 1.

Fig. 3 is an enlarged sectional view of the chucks and trimming or cutting elements.

Fig. 4 is a sectional view of the scrap cutting element taken on line 4-4 of Figure lt ig. 5 is a fragmentary sectional view illustrating the operation for forming a cap.

6 illustrates the `finished cap prior 4f to the ejetment thereof from the chuck.

Referring to the drawings the several parts of the machine are mounted upon a suitable 'frame 10 which rests' on legs 11, 11. The frame forms three aligned bearings 12,

ii" 13 and 14 in. which the main driving shaft 15 is journaled. The frame also forms two ofi set aligned bearings 16 and 17 in which the fixed chuck shaft 18 is journaled. Any suitable means, not shown, may be einployed to drive the main shaft 15, which drives the chuck shaft 18 by means of two intermeshing gears 19 and 20.

The cap is formed between two co-operating chucks, one of which is preferably stationary and receives the cap blank, while the other chuck is movable and is adapted to be brought into contact with the fixed chuck to form the cap. The terms fixed and removable chucks employed herein and in the claims are used to describe the relative relationship between the chucks irrespective of the fact that they are both ro'- tatable as is well understood in the art.

The movable chuck 21 is mounted to rotate on a chuck shaft 22 journaled in the bearing 23. rThe shaft 22 carries a gear 24 which meshes with an idler gear 25 on a stud shaft 26 which in turn is driven from the main shaft 15 by ai gear 27. The bear.- ing 23 for the chuck shaft 22 and the bearing 28 for the stud shaft 26 are both parts of a rocker arm which comprises branches 29 and 30 extending to the one side of the shaft 15, and a third branch extending to the other side of the shaft 15 and in line with the branch 30 aforesaid. The said arms or branches arc part of the rocker arm sleeve 33 which is preferably journaled on trunnions (not i shown) instead of being pivoted or journaled directly on the main shaft 15 so as to relieve the latter from, the operating pressure on the rocker arm as will appear hereinafter. The main shaft 15 extends through the rocker arm sleeve 33.

In order to bring the movable chuck 21 into operative relationship with the fixed chuck 34, the rocker arm is operated by a toggle mechanism to insure smoothA even work at steady pressure. To this end there is provided a cam shaft 35 carrying a rocker cam 36 upon which runs a cam roll 37 carried by the slotted cam rod 38. The latter is pivoted at 39 to a two armed lever 40 pivoted intermediate its ends at 41 to' the frame 10. The portion 42 of the lever 40 forms a toggle link p-ivoted at 43 to the other,v adjustable, toggle link 44. `45 is a guiding rod provided with a spring 46 which tends to break the toggle and which keeps the cam roll 37 on the cam 36; The rod 45 is pivoted to the toggle at 47. 48 is a stop on the toggle adapted to come to .lli

est upon the pads -ll on the trame. The rod la is also provided With nuts 50 which may he adjusted to limit the slidimi' nievenient of the rod so as to provide tor a degree oit movement ot the lever 410 outside the degree of movement 'thereot permitted or regulated by the cam 3G.

The cam shaft 35 is driven from the main shaft l5 by gears 2T? 51, 52 and 53. 5% is a clutch to Couple the shat't B5 to the gear 53 as will be understood. rihe clutch is operated by a 'treadle It will be understood trom the foregoing that when the treadle is depressed, 'While the machine is running, the movable chuck 21 is moyed down into co-operative relationship with the ixed chuck Sil through the instrumentalities of the cam 36, cam rod 3S, toggle 'T22-#i3 and the rocker arm 30-32 and that the chuck 2l remains down in contact With the chuck 34- so lonrr as the cam roll 3T r-uus on the high part or the ram 36. The effect-'ive high part of the latter may he adjust-ed by an'auxiliary cam as shoivn at 56.

Referringl now to Figures 3 to 6 it will be seen that the lined chuck Bel comprises a chuck head 60 which is screwed fast on the chuck shaft 18. A cap-head 'forming die 6l is screived into the chuck head 60 by means oi' a threaded stem y62. rlhe latter hollenv and through it. and the shaft 18 passes the lrnoclr out rod 63 which carries the knock out 64%. The latter is seated in the cap head 'forming die and forms a part thereof. as shown. A set screw 65 may be used to secure the forming die 6l in the chuel: head GO. The stem (52 carries a scrap cutter 66 and a heading and trimming washer provided with a heading edge 68 and a trimming edge 69, see Figure 5. The scrap cutter 66 is provided with longitudinal cutting,` edges 7G, see Figure 4;. Between the beading and trimming Washer (i7 and the die 6l. tie etem 52 carries a floating ring Ti or inner cap neck supporting die member, the *function of which Will be explained later. rfhe member il is of an outside diameter to lit Within the neck T2 of the finished cap 7S, see Figure t3, the diameter of `the said neck being equal to the diameter of the cap blanlr used for making the cap. land the inside ring diameter at shirted transversely of ie stein 62 'form asupport ttor the neck 74 is large enough to permit said ring` to be so as 'to i2 ofthe cap between thewvasher 6'? anr1 the die head 6l. 'during the formation of th .i e cap as shown in 1re a a 200.

dotted lines in rEhe outside dia ieter of the ring 7l is of course slightly l jer than the diameter ott the head 68, su Lcient to permit removal of the finished cup.

Tie movable ehucl; El comprises a chuck head 75 screwed :tast upon the chuck sha-ft 22, see Figure 3. A cap head forming roller T6 has a shank 77 screwed into the head T5 and secured by al set screw 78. The roller i6 has an annular heading shoulder 79 adapted to cooperate with the beading edge (it) on the Washer 6T. A cap holdingl ilange 8O is clamped to the chuck 21 by the formingl roller 76. The latter and the said flange 8O constitute an outer cap 'Forming die member as distinguished from the inner die members 6l, 67 and 7l.

The construction and the posit-.iones of the rlillierent parte of the two chucks 3l and 2l are shown in vFigure 3 which illustrates the chucks in inactive position.

The finished cap T3 is shown in Figure 6 just prior to its ejection 'from the lixed chuck Sil. lt will be seen that the cap T3 comprises a constricted neck 72 intermediate an enlarged cap head 82 and a bead S3 oit larger diameter than the neck 72.

rlie operation in forming the cap is as tollen'a: ji cap blanlr 85 of a diameter substantially equal to the diameter of the nec-k 72 is placed upon the die head 61 as shown in Yfull lines in Figure 5. The placing oit the cap on the fixed chuck may be done by hand feeding,` or `automatic feeding means o'l" the character shown in my U. S. atent Number 1,391,492, September 20. 'llrh may be used.

As shown in Figure 5 When the cap is piaf upon the chuck it automatically positioi e the floating ring 7l concentric With head (il and inasmuch as the lloat- Fits Within the neck portion TQ o' fujshed cap, it follows that the said lion is lat all timers supporteil ou said floating.; ring;- and crumbling, buckling'. crimping or tearing of the cap blank between the head S2 and the bead 83 is pre vented.

fitter the blank has been placed in position. the treadle is depressed and the outer die is brought into cooperative relationship with the tixed die as shown in Figure .3. llt will he seen that as the movable die is pressed against. the cap blank, the t'orming.` roller Y6 depresses that portion oi? the blank Which jforms the neck 72 of the finished rap. Which at the point of Contact between the tivo dies. and shifts the floating' vine' trans;- versely of the stem 62 causing the GorgeA spending diametrically opposite portion el the blank to bulge out as seenmin dotted lines at 'the bottom of Figure 5. As further seen 'from the dotted lines at 200. the metal ot the blank is at the same time drawn out over or spun out over t-he Washer 67 and the head 6l. fis noiv the tivo dies rotate in contact with each other, the hlanlr is being spun around and the .metal thereoiPA is spun over the Washer and the head to form the bead 83 and the cap head 82. During; this operation the floating` ring is whirled around the fili) stemand is by the centrifugal force gradually moved or lifted, as it were. into concentric position as shown in Figure 6, at which timethe bead 83 and the head 82 of the cap have been completely formed by the metal being` spun around and drawn over the washer 67 and head 61. In other words, the floating ring supports the blank at its smallest fixed diameter while the head of the cap and the bead is formed by enlarging the blank. So that while at the beginning of the forming operation, the floating ring is eccentrically positioned on the die stem 63 by the pressure exercised by the forming roller 76, it is gradually lifted into concentric position as shown in Figure 6 where the cap is finished. The positioning of the blank and the floating ring is shown in full lines in Figure The first deformation of the blank caused by the impact of the forming roller 7 6 is shown in dotted lines at 200 in said figure. 'From the last named position and until the completion of the cap as in Figure 6, the floating ring is gradually lifted into concentric position on the stem 62, the metal blank being gradually enlarged around the head 61 and washer 67. The function of the floating ring is to support the neck portion of the blank through. out the entire operation and to preserve the minimum diameter, the diameter of the neck of the cap, not only as a matter of size per se, but to permit removal of the finished cap, About three to four revolutions of the two chucks suiiice to complete the forming of the cap.

During the last one or two revolutions of the chucks, the cap is trimmed by the trimming roll 90, which is rotatably mounted ou a stud 91 adjustably carried in an arm 92 by means of an adjusting sleeve 93.

Then the cap has been formed the trimming roll descends automatically into the yspace 94 between the trimming edge 69 and the chuck head 60 and by cooperation between' the cutting edge 95 of the roll and the said trimming'edge 69 the cap is cut or trimmed circumferentially to a finished edge 96, see Figure 6. And by cooperation between the side 97 of the roll and the cutting -edges of the scrap cutter. the cut off portion or scrap of the blank is cut into pieces and thrown off the chuck as it rotates. The movable chuck stays down on the fixed chuck while the blank trimmed and the scrap cut ofi. Thereafter the trimmingroll moves up and the movable chuck leaves the fixed chuck.

he finished cap is pushed off the fixed chuck by the knock out which is operated by a lever 98 actuated by a cam roll 100 and cam 99, see Figurel in the usual manner.

The trimming roll arm 92 extends upwardly from a sleeve 101, rotatably carried on a reduced .portion ofthe rocker arm l sleeve 33 aforesaid, see Figure l, from the said sleeve 101 extends downwardly an .arm 102 which is pivoted at 103 toa link 10eL which carries a cam roll 105. The latter Iunson a cam 106 fast on the camshaft 35. The cani 106 is of course so timed that the cap is trimmed quickly after it has been formed and the trimming roll quickly lifted after the trimming and scrap-cutting operation.

The aforesaid parts are very eflicientin their operation, simple to make and` assemble and not apt to get out of order. The floating ring 71 is a distinguishing `feature of the constructionV and certain andautomatic in its operation.

ldhile I havel disclosed my invention in its preferred form, it will be understood that- I do not Wish to be limited to the, exact i construction shown, but that changes and alterations of the several parts and arrangements thereof may be made without departing from the spirit of rmy invention or the scope of the appended claims. I claim: y 1. rlhe combination of aninner die adapted to support the blank to be acted on from within. the same, an outer die, means ,for

moving the latter into `operative relation.

ship with the said inner die to act outhc blank and vmeans rotatably carried by said inner die for supporting a portion of the blank during the operations thereon. l

2. The combination of an inner die adapted to supportthe blank tobe acted on from within the same, an outer die, means for moving the latter into operative relationship with the saidI inner die to act on the said blank and means rotatably mounted upon said inner die and disconnected therefrom for supporting a portion of theblank during the operations thereon. y

3. The combination of an inner die adapt-- ed to supporta blank from within the same,

an outer die, means for moving the? latter into operative relationship with the said inner die to act on the blank, and a member rotatably mounted on said inner die and adapted to rotate in eccentric relationship lo said inner die forr supporting a portion of the blank while the same is being operated upon by the said dies.

il, The combination of an inner die adapt'-Y ed to support a blank from within the same.

an cuter die, means for moving the latter into operative relationshipvwith said inner die to act ou the blank and an yannular member loosely supported on sai-d inner die and disconnected vfrom the same for supporting a portion of theblank while the same is being operated upon by the said die. Q y i,

5. The combination of a die comprising a ldie head for enlarging aportion of a blank at the one end thereof, a washer for forming a bead at the other end of the blank, a member intermediate the said die head and washer for supporting the blank between the said enlarged portion and the said bead, said member being rotatably mounted adjacent said die head and disconnected from the same, a second die adapted to be moved with operative relationship with said first named die to form the said blank and means for operating the said two dies.

6. The combination of an inner die adapt-- ed to support a blank form within the same, said inner die comprising a plurality of blank forming elements, one of which is disconnected from the others, a scrap cutter mounted adjacent said die, an outer die adapted to cooperate with the said inner die to form the said blank, means for operat ing the said dies and cutting means adapted to vCQQPcrate with the said scrap cutter to cut the scrap from the formed blanks.

7. The combination of an inner die for forming a blank with enlarged portions at the opposite ends thereof, an outer die adapted to (3o-operate with the said inner die, a member carried by the latter for support ing the portion of the blank intermediate itsr ends, a cutting member having a plu-I .rality of cutting edges mounted adjacent said inner die, means for operating the said dies, a cutting element adapted to co-operatewith the said cutting member for cutting the scrap of the blank to cause said scrap to be lautomatically removed from the Same.

8. The combination of a die comprising a die head and a beading washer supported in longitudinal fixed alinement, spaced a distance apart and adapted to support a blank, a second die adapted to co-operate with said first named die for forming said blank with an enlarged head and an enlarged bead, means for operating the said -two dies and a member loosely carried by said first named die between the said die head and washer, said member being adapted Ito move transversely with respect to said die head and washer in accordance with the configuration of the said second die to sup-port the said blank intermediate its enlarged portions duri-ng the formation if? 9 Tie combination of' a die comprising a die head and a beading washer supported longitudinal fixedalin'ement,` spaced a distance apart and adapted to support a blank, a second die adapted toco-operate with said first named' die for forming said blank with an enlarged head and an enlarged bead, means for operating the said two dies, and a blznikl supporting ring loosely carried by said firstnamed die between the said die head and washer, said blank supporting ring being adapted to move transversely with respect to said die head and washers in accordance with the configuration of the said second die to support the said blank interi'nediate its enlarged portions during the formation thereof.

10. rlhe combination of a die coniprising a die head and a beading washer supported in longitudinal fixed alinement, spaced a distance apart and adapted to support a blank, a second die adapted to co-operatt` with said first named die for forming said blank with an enlarged head and an enlarged bead, means for operating the said two dies. and a member loosely carried by ,said first named die between the said die head and washer, said member being adapted to more transversely with respect to said die head and washers in accordance with the config uration of the said blank intermediate its enlarged portions during the formation thereof and means coeoperating with the said beading washers for trimming the blank after it has been formed.

l1. The combination of a die comprising` a die head and a beading washer supported in longitudinal fixed alinement, spaced a. distance apart and adapted to support a blank, a second die adapted to co-operate with said rst named die for forming said blank with an enlarged head and an enlarged bead, means for operating the said two dies,` a member loosely carried by said first named die between the said die heads and washer, said member being adapted to move trans versely with respect to said die head and washer in accordance with the configuration of the said second die to support the said blank intermediate its enlarged portions during the formation thereof, means for trimming the blank after it has been formed and means for cutting the trimmed off' scrap to remove the same.

12. The combination of a die comprising a die head and a beading washer for enlarging predetermined portions of a blank, a second die adapted to co-operate with said first named die to form the said blank. a fioating ring mounted on said rst named die for supporting the blank during the formation thereof at the portions where said blank has a predetermined minimum diam eter and means for operating the said dies.

13e The combination of a die comprisi a die head and a beading washer for enlarginI predetermined portions of a blank, a secon die adapted to co-operate with said fi? named die to form the said blanks, a floatv ing ring mounted on said firsts-named die for supporting the blank during the formation thereof at the portions where said blank has a predetermined minimum diameter, means for operating the said dies and means for trimming thev blank after it. has been formed.

14. The combination of edle, comprising e die head and a beading Washer for enlarging predetermined portions of a blank, a screw die adapted to (zO-operate Wit-h Said first named die to form the seid blank, a oating ring mounted on seid first named die for supporting the blank during the format-ion thereof et the portions Where said blank has a predetermined minimum diameter, means for operating the said dies and for cutting 10 the trimmed off portions of the blank into separate pieces to remove the same.

HERMAN OSSWALD. 

